Well treating method

Details Well treating method Well treating method

1979-03-16

1981-02-17

Leppink, James A.

Wells

Processes

Placing fluid into the formation

166302, 166307, E21B 3600, E21B 4322, E21B 4327

Patent

active

042509653

ABSTRACT:
A method of stimulating production from an oil well capable of primary production of an oil bearing strata, comprising the steps of injecting liquid carbon dioxide down the bore of the oil well at a pressure sufficient for gaseous carbon dioxide, formed by the evaporation of the liquid carbon dioxide, to permeate through the strata and react with connate water to make carbonic acid. The well is then shut in for a period of time enabling the carbonic acid to react with the rocks in the strata to increase the permeability of the strata and thereby stimulate production from the oil well.

REFERENCES:
patent: 1843002 (1932-01-01), Small
patent: 3076762 (1963-02-01), Dill
patent: 3195634 (1965-07-01), Hill
patent: 3353597 (1967-11-01), Mulder
patent: 3354957 (1967-11-01), Every et al.
patent: 3386511 (1968-06-01), Messina
patent: 3612183 (1971-10-01), Shillander et al.

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